As far as I can remember, some of this owl species like landscape planting of private estates during migration, so they are quite "middle class".
Examples are one at Tai Ko Shing in 1996, one in Mei Woo in 2007 and 2008.
So, this record at Kln East (I assume) is another interesting record of how this owl species like open highly unnatural landscape area in HK during migration.